lets see if this helps...
> download display driver uninstaller from guru3d...run it and uninstall all current drivers...
> power off the system and reset the cmos battery...
> clean the card properly for dust accumulation...
> power on the system and update the bios to the latest one, but before that, keep a copy of the older bios, in case the new one doesnt work...(optional)
> now go to the nvidia/amd website and download the latest drivers for the card and install them...
> along with that u should update ur...vcredist, c++ redistributable, directx, and .net framework...
let us know wat happns...